{"product_id":"mitsubishi-electric-fr-a840-75k-1-fr-a800-series-variable-frequency-drive","title":"FR-A840-75K-1 | MITSUBISHI | Variateur de vitesse\/fréquence (VSD\/VFD) \/ Variateur avec borne FM","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eEngineered for high-demand heavy industrial applications, the Mitsubishi Electric FR-A840-75K-1 variable frequency drive delivers precise speed and torque control for motors up to \u003cstrong\u003e75 kW\u003c\/strong\u003e. Incorporating advanced vector control algorithm technologies, this three-phase 400V class inverter maximizes operational uptime and system efficiency in demanding processing environments. The unit features a dedicated \u003cstrong\u003eFM terminal\u003c\/strong\u003e configured for high-speed pulse train output, enabling real-time feedback and seamless integration into higher-level DCS and PLC architectures.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReal Sensorless Vector Control:\u003c\/strong\u003e Achieves high-accuracy torque control and exceptional dynamic response without requiring a physical speed encoder.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in RS-485 Communication:\u003c\/strong\u003e Supports Modbus-RTU and Mitsubishi standard protocols directly via the RJ-45 interface, with expansion options for CC-Link, Profibus-DP, EtherCAT, and PROFINET.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnhanced Terminal FM Interface:\u003c\/strong\u003e Provides high-speed pulse train output (up to 55 kHz) for monitoring critical operating parameters such as output frequency or motor speed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Overload Capacity:\u003c\/strong\u003e Designed to withstand heavy-duty industrial cycles with dual ratings for Normal Duty (ND) and Light Duty (LD) operational demands.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in PLC Functionality:\u003c\/strong\u003e Allows custom logic sequences to be programmed directly within the drive, reducing the need for external control components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003eHeavy-duty industrial extraction fans and high-volume ventilation blowers.\u003c\/li\u003e\n  \u003cli\u003eMulti-stage centrifugal pumps and water treatment processing systems.\u003c\/li\u003e\n  \u003cli\u003eHeavy-material conveyors, overhead cranes, and material handling gantries.\u003c\/li\u003e\n  \u003cli\u003eCompressors, extruders, and industrial mixing machinery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications Table\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #1a365d;\"\u003e\n        \u003cth style=\"text-align: left; padding: 0.75rem; font-weight: bold; color: #1a365d;\"\u003eSpecification Parameter\u003c\/th\u003e\n        \u003cth style=\"text-align: left; padding: 0.75rem; font-weight: bold; color: #1a365d;\"\u003eValue \/ Rating\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eMitsubishi Electric\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eFR-A840-75K-1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eApplicable Motor Capacity\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e75 kW (Heavy Duty) \/ 90 kW (Normal Duty)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eInput Voltage Class\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eThree-Phase 380 to 500 V AC (50\/60 Hz)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eRated Output Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e144 A (Heavy Duty) \/ 180 A (Normal Duty)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eOutput Capacity\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e110 kVA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eControl Method\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eV\/F Control, Advanced Magnetic Flux Vector Control, Real Sensorless Vector Control\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eMonitor Output Terminal\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eTerminal FM (Pulse Train Type)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCommunication Protocols\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eRS-422, RS-485 (Built-in Modbus RTU)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eProtective Rating\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eIP00 (Open Type)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eOperating Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e-10 degC to +50 degC (Non-freezing)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCompliance \u0026amp; Certifications\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eCE, UL, cUL, RoHS compliant\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCountry of Origin\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eJapan\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e53.0 kg (116.8 lbs)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003ePhysical Dimensions (W x H x D)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e465 mm x 595 mm x 300 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch4\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe FR-A840-75K-1 serves as the direct replacement for the legacy FR-A740-75K model series. While the footprint and control terminal layouts are largely identical, parameter migration must be handled carefully. When upgrading, parameters should be exported via FR Configurator2 software to ensure custom logic programs and PID loop configurations translate correctly. Note that the \"-1\" suffix designates the unit equipped with the FM terminal interface (pulse output) as opposed to the \"-2\" suffix which features an AM terminal (analog voltage output).\u003c\/p\u003e\n\n\u003ch4\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eOperating a 75 kW high-capacity drive generates substantial thermal loads, approximately 1850 Watts of heat dissipation at full capacity. Enclosing this unit within sealed IP54 panels requires forced mechanical cooling to prevent the internal heatsink from exceeding 50 degC, which triggers an overtemperature warning (E.THT). Additionally, installing an external DC link reactor (FR-HEL) is highly recommended to protect the rectifier bridge from input line surges and reduce high-frequency harmonic feedback into the distribution transformer.\u003c\/p\u003e\n\n\u003ch4\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen routing cables for the FM pulse output terminal, use braided, shielded twisted-pair (STP) wiring with a minimum wire cross-section of 0.75 mm2. Keep control cables physically isolated from the output motor phases (U, V, W) by a distance of at least 30 cm to prevent EMI noise injection, which can distort pulse output readings. If the drive displays an E.UVT (Undervoltage) fault during ramp-up, verify that the input voltage supply does not sag below 323 V AC under transient loading conditions.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cp style=\"color: #9b2c2c; font-weight: bold; margin: 0 0 0.5rem 0;\"\u003eCRITICAL WARNING: HIGH VOLTAGE RISK\u003c\/p\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0;\"\u003eIsolate all primary feed circuits before executing installation. Wait a minimum of 10 minutes post-power-down to allow internal DC bus capacitors to discharge below safety thresholds. Confirm that the DC bus voltage across terminals P\/+ and N\/- is measured at 0 V with a rated digital multimeter before initiating terminal modifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 1rem; color: #2d3748; margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 2rem; height: 2rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e1\u003c\/div\u003e\n    \u003cp style=\"margin: 0;\"\u003eMount the drive vertically on a flat, non-flammable vertical backplate to optimize convection cooling currents across the heatsink assembly.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 2rem; height: 2rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e2\u003c\/div\u003e\n    \u003cp style=\"margin: 0;\"\u003eConnect the mains power cabling to terminals R\/L1, S\/L2, and T\/L3. Connect the output motor cabling to terminals U, V, and W. Ensure all ground lugs are connected to a low-impedance facility earth bus.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 2rem; height: 2rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e3\u003c\/div\u003e\n    \u003cp style=\"margin: 0;\"\u003ePerform a dry run setup with the motor disconnected. Set Parameter 9 (Motor Rated Current) and Parameter 71 (Applied Motor Selection) via the onboard PU display before running an autotuning sequence.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Mitsubishi Electric","offers":[{"title":"Default Title","offer_id":53102124859755,"sku":"FR-A840-75K-1","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/fr-a840-75k-1-womxvp5hetc.png?v=1776137474","url":"https:\/\/www.plcprotech.com\/fr\/products\/mitsubishi-electric-fr-a840-75k-1-fr-a800-series-variable-frequency-drive","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}